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What is a Machine - Section Review
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1. Explain how using a ramp makes work easier.
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2. Why can't a machine be 100 percent efficient?
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3. Suppose you exert 15 N on a machine, and the machine exerts 300 N on another object. What is the machine's mechanical advantage?
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4. For the machine described in question 3, how does the distance through which the output force is exerted differ from the distance through which the input force is exerted?
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